From c17b6df3b5232be5fc638ffadc8a751cf7dbebd1 Mon Sep 17 00:00:00 2001
From: omenem <omenem@usi.ch>
Date: Mon, 23 Mar 2020 17:53:22 +0100
Subject: [PATCH] delete cascade no more

---
 .../usi/inf/sa4/sanmarinoes/smarthut/models/Dimmer.java   | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Dimmer.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Dimmer.java
index e192015..d06bece 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Dimmer.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Dimmer.java
@@ -6,6 +6,7 @@ import javax.persistence.Entity;
 import javax.persistence.Inheritance;
 import javax.persistence.InheritanceType;
 import javax.persistence.OneToMany;
+import javax.persistence.PreRemove;
 
 /** Represents a generic dimmer input device */
 @Entity
@@ -32,4 +33,11 @@ public abstract class Dimmer extends InputDevice {
     public void addDimmableLight(DimmableLight dimmableLight) {
         lights.add(dimmableLight);
     }
+
+    @PreRemove
+    private void removeLightsFromDimmer() {
+        for (DimmableLight dl : getOutputs()) {
+            dl.setDimmerId(null);
+        }
+    }
 }